來龍去脈

To come; to arrive; to return; to happen; to be used as a substitute for a verb; indicating possibility; indicating the future or next time; approximately.

Chinese dragon; a mythical creature; emperor; dinosaur; a long, winding object; a type of synthetic fiber.

To go to a place; to leave; to depart; to die (euphemism); to send or remove; to be apart from; used before a verb to indicate going to do something.

Arteries and veins; blood vessels; pulse; a lineage or branch; a system with branching structures.